同步完整源码至远程：扁平化重构现状 + 未入库源文件

- 补入库：server/internal/db/dump.go、redis 分页/扫描预算测试、opsxdb-mcp main_test、
  packages/opsxdb-mcp package-lock、docs 审计与对比文档等 37 个新文件
- 含结构扁平化进行中的 80 处修改与 155 处旧结构删除（server/ src/ src-tauri/ 为当前有效源）
- 构建产物（bin/target/dist）与签名私钥仍按规则排除

server/internal/db/redis_scan_budget_test.go

@@ -0,0 +1,42 @@
+package db
+
+import (
+	"context"
+	"github.com/redis/go-redis/v9"
+	"testing"
+)
+
+type budgetRedis struct {
+	redis.UniversalClient
+	calls int
+	batch []string
+}
+
+func (c *budgetRedis) Scan(ctx context.Context, cursor uint64, match string, count int64) *redis.ScanCmd {
+	c.calls++
+	cmd := redis.NewScanCmd(ctx, nil, "scan")
+	cmd.SetVal(c.batch, uint64(c.calls))
+	return cmd
+}
+func TestRedisScanBudgetSparseMatches(t *testing.T) {
+	c := &budgetRedis{}
+	names, truncated, err := scanAll(context.Background(), c, "missing*", 200, 500, 20)
+	if err != nil || !truncated || len(names) != 0 || c.calls != 20 {
+		t.Fatalf("calls=%d names=%v truncated=%v err=%v", c.calls, names, truncated, err)
+	}
+}
+func TestRedisScanCountIsNotHardLimit(t *testing.T) {
+	c := &budgetRedis{batch: []string{"a", "b", "c"}}
+	names, truncated, err := scanAll(context.Background(), c, "*", 1, 2, 20)
+	if err != nil || !truncated || len(names) != 2 || c.calls != 1 {
+		t.Fatalf("names=%v calls=%d truncated=%v err=%v", names, c.calls, truncated, err)
+	}
+}
+
+func TestRedisBrowsePattern(t *testing.T) {
+	for input, want := range map[string]string{"order": "*order*", "order:*": "order:*", "*": "*"} {
+		if got := redisBrowsePattern(input); got != want {
+			t.Fatalf("input=%q got=%q want=%q", input, got, want)
+		}
+	}
+}